Music-leaf turner



A. S. HONTZ MUSIC LEAF TURNER Filed Dec.

Feb. 1o, 1931.

26. 1928 2 Sheets-Sheet l H BY ATTOR NE\l Feb. l0, 1931. A s, HoNTz MUSIC LEAF TURNER Filed Dec. 26. 1928 2 ShOQtB-Sheet 2 [Alllr [fn uNvENron ATTORNEY Patented Feb. 10, 1931 ALBERT S. HONTZ, OF MAINSVILLE, PENNSYLVANIA MUSIC-LEAF TURNER Application led December 26, 1928. Serial No. 328,537.

This invention relates to a music leaf turner, the general object of the invention being to provide a shaft on which the leaf clamp is placed, with means operated by a spring actuated rack bar for rotating the shaft, the rack bar being lowered against the action of its spring by manually operated means and manually operated latch means for holding the rack bar in lowered position whereby the leaf is turned by a downward movement of the rack bar and then the leaf is returned to its normal position by the upward movement of the rack bar when the latch mean-s are released.

This invention alsoconsists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specilically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a front view of a piano, showinfr the invention in use.

Figure 2 is a sectional view through the casing which is attached to the piano and which contains the operating parts of the device, the piano and parts of the invention being shown in elevation.

Figure 3 is a section on line 3-3 of Figure 2.

Figure 4 is a section on line 4-4 of Figure 2.

Figure 5 is a view similar to Figure 4, but showing the parts in a different position.

Figure 6 is a section on line 6-6 of Figure 4.

Figures 7 and 8 are views of the pedals.

Figure 9 is a sectional view showing a modification.

In these views, the numeral 1 indicates a casing placed on the piano A under the music rack thereof, and 2 indicates a vertically arranged shaft extending through the top of the casing and journaled therein and having the leaf clamp B fastened thereto by the set screw 3. A horizontally arranged shaft 4 is journaled in the casing and is connected with the shaft`2 by the beveled gears 5. A rack bar 6 extends through the bottom part of the casing, with its toothed part located within the casing and the teeth of this rackbar mesh with a gear 7 which is attached to the shaft 4, so thatthe reciprocatory movement of the rack bar will be imparted to the shafts 2 and 4 and thus theclamp Will be turned. A spring 8 is supported by a bracket 9 in the casing and this spring is attached to the rack bar and tends to hold the same in its upper position, with the leaf in one of its positions. A foot pedal 10 is suitablyattached to the lower part of the piano and a rod 11 connects the pedal with the'lower end of the rack bar so that when the pedal is depressed, the rack bar will be moved downwardly until the stops 12 thereon engage the bushing 13 extending upwardly from the bottom of the casing and through which the rack bar passes. A spring actuated latch 14 is arranged in the bottom ofthe casing and this latch will engage a notch 15 in the rack bar when the rack bar reaches its lowest position so as to hold the rack bar in lowered position. A second pedal 16 is arranged adjacent the first pedal and is connected with the latch by a iiexible member 17 so that when this pedal 16 is depressed, the latch will be moved to releasing position and the spring 8 will return the rack bar to its raised position.

From the foregoing it will be seen that after the music on one face of the sheet has been played, it is simply necessary to depress the pedal 10 to lower the rack bar and this lowering movement will be imparted to the clamp through the'shafts 2 and 4 so that the leaf will be turned, the latch holding the parts in adjusted position. When the leaf is to be returned to its normal position, it is simply necessary to depress the pedal 16 to release the latch, when the spring 8 will raise the rack bar andthus the parts will be moved to bring the clamp and the leaf to their first positions. y

In themodification shown in Figure 9, the

parts are operated by magnetic means, a y

magnet 18 being arranged in the casing and having its armature connected with a rod 19 which is connected to a bracket on the rack bar so that when the switch 21 of the circuit 22 of the magnet is closed, the armature is lowered and thus the rack har is moved downwardly through means of the rod 19 and the bracket 20. The latch 14; is also moved to releasing position by a magnet 23, the cirsuit 24 of which is controlled by a switch 25 tionV that the advantages and novel -featuresl of the invention will he readilyapparent.

It is to he understood that changes may he made in the construction and in the combination and arrangement of the several parts,

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provided that such changes fallV within the scope y'of the appended claims. Y

1. A music-leaf turner comprising a supp0rt,1a vertical shaft journaled therein, a leaf clamp connected with the shaft, a second shaft journaled .in :the 'support at a right angle to the vertical shaft and geared thereto, a vertically disposed rack bar slidably arranged in the support, al gear on the second shaft meshing with thefteeth of the rack bar, a clock spring for holding the rack bar in raised position, means for lowering the rack bar wherehy the leaf clamp is given a half revolution, latch means for holding the rack bar in lowered position and means for releasing the latch means yto'permit the spring to return the bar to itsraised position whereby theV leaf clamp is returned to its normal position.

2;V A leaf turner comprising a casing, a vertical shaft passing through the top of the same and journaled therein, a leaf clamp connected with lthe vupper end of the shaft, a

Vhorizontally*` arranged shaft in the casing,

gears connecting the two shafts together, a vertically disposed rack bar passing'through the lower part of the casing, a ygear on the horizontal shaft meshing with the teeth of the rack bar, a clock spring inthe casing con- -nected wth'the upper end of the rack bar for holding the same'in ,raised position, stop means for limitng the downward movement Y of the rack bar, a spring actuated latch for holding the rackhar in lowered position,

means'for .lowering the rack bar and-means for releasing the latch. Y A

3. A leaf turner comprising a casing', a

shaft passing through the top of the. same and journaled therein, a leaf clamp connected with the upperJend-of the' shaft, a horizontally arranged shaft in the'casing, gears connecting ythe two shafts together,f a rack har passing through the lowerfpart of the casing,

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